The dramatic and mysterious crash of the Boeing 777’s Malaysia Airlines MH370, reminds us how radio systems and here geolocation and GPS tracking airplanes systems, are essential services, until that it can not be disabled or putting off as easily…

Surprisingly, radio technologies used for geolocation and tracking of aircraft are quite classic and easy to listen/decode, still nowadays.

From a radio point of view with SDR USB stick receiver, it has never been so easy and inexpensive to receive, decode yourself, GPS positioning information sent in real time by aircraft passing near his position !